All other users must have permissions added by the user with full access before they can view the Shared Mailbox. Only those with full access can automatically see the Shared Mailbox and its contents upon login. If a user would be designated at this level, they probably shouldn’t have access to the account. Contributer: The lowest-level permission in Exchange.Owner - Reviewer: Allows account access, but not administrative rights.Full Access: The highest level of administrative rights for an Exchange Shared Mailbox is full access, and an owner has fewer permissions.A full access user of an Exchange (Outlook) Shared Mailbox must change permissions for others to access mailbox folders, and non-full access users have to add the Shared Mailbox to their own Exchange (Outlook) account in order to see it upon login.
